Bitcoin wallet because you can be your own bank w/o someone taking your btc.
The only disadvantage is that when the bitcoin is in your wallet, you cannot earn bitcoin interest. Just the value increase.
Yeah thats right but you will get a higher value than the interest when you have a bitcoin in a value due to a difference in growth in a month. This will never be experienced in a bank, But when invested in shares with cash the same can be achieved. So both bank and bitcoin wallet are important.